Question regarding WDM modem support

Hi all,
I need a virtual modem to be installed for a particular device.
From the DDK documentation I found that the “fakemodem” sample could be
used for writing modem drivers with WDM lower edge. My doubt is whether
the driver is compatible with the 9x architecture if the support drivers
(ccport.sys) suggested is provided. Is there any other way to achieve
the same using standard drivers already provided by Microsoft.
Thanks/Regards,
Shashi